Akamai is probably trying to identify unique sessions or clients, and showing stats based on that.
Statcounter is tracking browser usage roughly by percentage of requests. They do some corrections, for instance they try to account for Chrome's prefetching.
More people (or more computers) might use IE as their default browser, but if Chrome is responsible for more activity (requests), what's the more popular browser?
> Chrome is responsible for more activity (requests)
Does anyone know if the prefetching/prerendering Chrome does is a significant portion of web traffic? Because that could easily skew request-based analytics.
Headers wouldn't work, because a prefetch often turns into a page view.
Edit: their methodology is public. They use the aforementioned API, and headers for the two other browsers that prerender (Firefox and Safari, who rarely prerender because pages must explicitly configure it). Pages pre-rendered and discarded would add 1.3% to Chrome page views if they weren't discounted. Here is the StatCounter FAQ: http://gs.statcounter.com/faq#prerendering
Statcounter is tracking browser usage roughly by percentage of requests. They do some corrections, for instance they try to account for Chrome's prefetching.
More people (or more computers) might use IE as their default browser, but if Chrome is responsible for more activity (requests), what's the more popular browser?